Compensational Computation Offloading for Maximizing Lifetime of Edge Networks

摘要

In this letter, we propose a novel scheme, called Compensational Computation Offloading, which aims at efficiently maximizing the lifetime of edge networks. The main idea of the scheme is to offload the computing tasks of the nodes with low residual energies to the ones with high residual energies. At the same time, the energy consumptions cost by the transmitting and receiving tasks during the computation offloading are considered. IN order to balance the residual energies of the network, we design a high-efficiency scheduling algorithm which runs iteratively to search for near-optimal probabilities of each node offloading its tasks to its neighbor nodes. Finally, we obtain a set of probability values to form the overall scheduling algorithm. Simulation results demonstrate our scheme can efficiently increase the network's lifetime several times under different network topologies. The algorithm is very reliable and can approach approximate equality for each node in an edge network.